JP2008084466A - Head slider support device and storage system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head slider support device reducing the influence of crosstalk between wiring lines, and a storage device. <P>SOLUTION: The head slider support device having a magnetic head slider connected to one end and a preamplifier IC connected to the other end is provided with a support part (flexure) constituted of a conductor for supporting the magnetic head slider, an insulating part constituted of an insulator brought into contact with the support part, a heater signal line 31a as a wiring line for interconnecting the magnetic head slider and the preamplifier IC to control a heater disposed in the magnetic head slider and brought into contact with the insulating part, a heater GND line 30a as a wiring line for interconnecting the magnetic head slider and the preamplifier IC to connect the heater to ground and brought into contact with the insulating part, and a GND connection line 30b as a wiring line for interconnecting the heater GND line 30a and the support part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a head slider support device having a transmission path for connecting a head slider and a preamplifier IC, and a storage device.

  As recording density and transfer speed of a magnetic disk device (HDD) increase, it becomes difficult to record and reproduce signals. As a measure for improving the performance of the magnetic disk device, a technique for controlling the flying height of the magnetic head slider has been proposed. This is because the heater resistance is built in the magnetic head slider, and the flying height of the magnetic head slider is controlled by heating the heater resistance, and the write performance of the write signal to the disk recording medium and the read signal from the disk recording medium Is a technology (levitation control method) that improves the reading performance of

  As a related art related to the present invention, there is a magnetic head slider with a built-in heater resistor that prevents the occurrence of a crosstalk current to the reproducing element (see, for example, Patent Document 1).

  FIG. 12 is a circuit diagram showing an example of electrical connection between a conventional flying control type magnetic head slider and a preamplifier IC. The magnetic head slider is composed of a slider substrate 3a and a thin film head portion 3b, and is fixed to the suspension 2 as a conductor with an adhesive. An MR (Magneto Resistive) element 61 in the thin film head portion 3b is connected to a read input of the preamplifier IC 5 via read signal lines 40a and 41a formed on the suspension 2. Here, the MR element (magnetoresistance effect element) may be an MR element capable of high density reproduction such as GMR type or TuMR type.

Unlike Patent Document 1, the MR element 61 is placed in the thin film head portion 3b on the slider substrate 3a, which is a conductor, via a high resistance (several tens KΩ) shunt resistor 64 for ESD (Electrostatic Discharge) countermeasures. Are connected by a conductor penetrating through. The write coil 62 in the thin film head portion 3b is connected to the write current output of the preamplifier IC 5 via write signal lines 50a and 51a formed on the suspension 2. The heater resistor 63 in the thin film head portion 3b is connected to the heater signal output of the preamplifier IC 5 through the heater signal line 31a formed on the suspension 2, and the heater GND line 30a formed on the suspension 2 is connected to the heater signal output 31a. To the heater ground of the preamplifier IC5. Further, like the MR element 61, unlike the patent document 1, the ground connection end of the heater resistor 63 is connected to the slider substrate 3a by a conductor penetrating the thin film head portion 3b for ESD countermeasures.
JP 2006-79755 A (US 2006/0056110) JP-A-8-1111015 Japanese Patent Laying-Open No. 2005-116127 (U.S. Patent No. 2005/0078416) US 2003/0128474 Specification US 2004/0070880 Specification US 2005/0195528 US Patent No. 7,006,330

  In the above-described configuration, noise (disturbance noise) that propagates through the disk recording medium due to motor rotation, external radio waves, and the like is because the distance between the disk recording medium and the magnetic head slider during HDD operation is as narrow as nano-order. Propagates easily to the magnetic head slider. Further, when reading the HDD, this disturbance noise propagates along the ground path of the slider substrate 3a, the heater GND line 30a, the preamplifier IC5, and the preamplifier IC.

  Further, since the line length from the magnetic head slider to the preamplifier IC is as long as several tens of millimeters, disturbance noise is superimposed on the read signal due to crosstalk from the heater GND line 30a to the read signals 40a and 41a, and the error rate of the HDD is reduced. It causes deterioration.

  As a countermeasure against this disturbance noise, there is generally a method of adding a conductive adhesive for electrically connecting the slider substrate 3 a and the suspension 2, in addition to the adhesive for fixing the magnetic head slider to the suspension 2. However, since the resistance value of the conductive adhesive is as high as several hundred Ω and the connectivity of the conductive adhesive is poor, a sufficient ground connection effect cannot be obtained. Furthermore, adding a conductive adhesive may deform the suspension and adversely affect the mechanical characteristics of the suspension.

  As a related art related to the present invention, there is a magnetic head slider provided with a dedicated pad for connecting the suspension 2 and the slider substrate 3a (for example, see Patent Documents 2 to 7).

  However, recent HDDs employ a load / unload mechanism in order to improve impact resistance, and the inertia of the actuator is increased as compared with the case where the load / unload mechanism is not employed. In addition, in order to cope with further lower flying height of the magnetic head slider, the size of the magnetic head slider is becoming smaller and lighter than before. In addition, the number of signal lines connected to the flying control system magnetic head slider is increased from 4 (read wiring and write wiring, 2 each) to 6 (add 2 heater wirings) of the conventional magnetic head slider which is not the flying control system. ). Therefore, if the magnetic head slider is miniaturized and the flying control method magnetic head slider is adopted at the same time, the width and interval of the signal line connection pads of the magnetic head slider are further narrower than before, and the gap between the magnetic head slider and the preamplifier IC is reduced. Since the number of signal lines to be connected increases, it is difficult to employ techniques such as those in Patent Documents 2 to 7.

  As described above, there is no effective means for disturbance noise when the flying control type magnetic head slider is used.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a head slider support device and a storage device that reduce the influence of crosstalk between wirings.

  In order to solve the above-described problems, the present invention provides a head slider support device for holding a head slider provided with at least a heater element, the support portion including a conductor for supporting the head slider, and the support. An insulating part made of an insulator in contact with the part, a wiring for supplying power to the heater element, a heater signal line in contact with the insulating part, and a wiring for connecting between the heater element and a ground potential And a heater GND wire in contact with the insulating portion, and a GND connection portion which is a connection portion for connecting the heater GND wire and the support portion.

  In the head slider support device according to the present invention, a GND connection end of the heater element is connected to a slider substrate of the head slider.

  In the head slider support device according to the present invention, both terminals of the magnetoresistive effect element provided on the head slider are connected to the slider substrate of the head slider via a high resistance provided on the head slider. It is characterized by being.

  Further, in the head slider support device according to the present invention, the insulating portion has a hole through which the GND connection portion is passed.

  In the head slider support device according to the present invention, the GND connection portion is disposed at a position where it does not contact the jig and other components.

  Further, in the head slider supporting device according to the present invention, at least one write signal line which is a wiring for supplying power to the write element provided in the head slider, and a read element provided in the head slider At least one read signal line that is a wiring for supplying power to the heater, and a holding unit that holds the heater signal line, the write signal line, and the read signal line, and the heater signal line and the write signal line The distance between the heater signal lines and the distance between the heater signal lines and the lead signal lines is longer than the distance between the heater signal lines in a predetermined region of the holding portion.

  In the head slider support device according to the present invention, the predetermined region is a tail portion in a long tail suspension.

  In the head slider support device according to the present invention, the distance is a distance in a short direction of the head slider support device.

  In the head slider support device according to the present invention, the write signal line, the heater signal line, and the read signal line are arranged in this order in the short direction.

  The present invention is also a head slider support device for holding a head slider having at least a heater element, wherein the head has at least one heater signal line as a wiring for supplying electric power to the heater element, and the head At least one write signal line that is a wiring for supplying power to a write element provided on the slider, and at least one read signal line that is a wiring for supplying power to a read element provided on the head slider And a holding unit for holding the heater signal line, the write signal line, and the read signal line, and a distance between the heater signal line and the write signal line, and between the heater signal line and the read signal line. That at least one of the distances is longer than the distance between the heater signal lines in a predetermined region of the holding portion. And butterflies.

  Further, the present invention provides a head control device that controls the head portion, a support portion made of a conductor that supports a head slider provided with the head portion, an insulating portion made of an insulator in contact with the support portion, Wiring for connecting the head slider and the head control device to control the heater provided on the head slider, heater signal line in contact with the insulating portion, and wiring for connecting the heater toward the ground The heater GND wire in contact with the insulating portion, and a GND connection portion which is a connection portion for connecting the heater GND wire and the support portion.

  According to the present invention, it is possible to reduce the influence of crosstalk between wirings during a read operation and / or a write operation of a storage device equipped with a head slider with a heater. Therefore, the reliability of data storage can be improved and higher density recording can be achieved.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, the configuration of the actuator in the magnetic disk device (storage device) according to the present embodiment will be described.

  FIG. 1 is a structural diagram showing an example of the structure of the actuator according to the present embodiment. A suspension 2 and an FPC (Flexible Printed Circuit) 4 are mounted on the actuator block 1. The magnetic head slider 3 is a flying control type magnetic head slider, and is fixed to the tip of the suspension 2 with an adhesive. A preamplifier IC 5 is mounted on the FPC 4. Note that the preamplifier IC generally includes not only a signal amplification circuit (amplifier) but also a head selection circuit for head selection, a current control circuit for a heater, and the like, and an MPU (Micro Processing Unit). And a head controller (head IC) that controls the head based on a control signal from a controller such as HDC (Hard Disk Controller).

  The signal line of the preamplifier IC 5 formed on the FPC 4 and the signal line formed on the suspension 2 are connected by soldering or the like, and the preamplifier IC 5 and the magnetic head slider 3 are connected via this path. . The ground of the actuator block 1 which is a conductor and the preamplifier IC 5 formed on the FPC 4 is connected to the pin 6 protruding from the actuator block 1 by soldering or the like. The suspension 2 as a conductor is fixed to the actuator block 1 by caulking, and the ground of the preamplifier IC 5 and the suspension 2 are connected via the actuator block 1. The material of the actuator block 1 is generally aluminum. A disk recording medium is inserted between each magnetic head slider 3 and rotates. As the actuator changes the angle, the position of the magnetic head slider 3 is moved to the target track on the disk recording medium.

  Next, the configuration of the magnetic head slider 3 according to the present embodiment will be described.

  FIG. 2 is a schematic structural diagram showing an example of the structure of the magnetic head slider 3 according to the present embodiment. The magnetic head slider 3 is composed of a slider substrate 3a and a thin film head portion 3b. MR element 61, write coil 62, heater resistor 63, shunt resistor 64, read signal line connection pads 40 and 41, write signal line connection pads 50 and 51, heater signal line connection pad 31, heater GND line connection pad 30 are sliders. It is formed by laminating on the thin film head portion 3b on the substrate 3a. Similarly, the conductors connecting these, the conductors connecting the slider substrate 3a, the heater resistor 63, and the shunt resistor 64 are also laminated on the thin film head portion 3b. The MR element 61, the write coil 62, and the heater resistor 63 are integrally arranged on the air bearing surface side (the side facing the disk recording medium) of the magnetic head slider. In the thin film head portion 3b, the MR element 61 is connected to the read signal line connection pads 40 and 41, the write coil 62 is connected to the write signal line connection pads 50 and 51, and the heater resistor 63 is the heater GND line connection pad. 30 and the heater signal line connection pad 31. The material of the slider substrate 3a is generally Altic and is a conductive material.

  Next, electrical connection between the magnetic head slider 3 and the preamplifier IC 5 in the suspension 2 according to the present embodiment will be described.

  FIG. 3 is a circuit diagram showing an example of electrical connection between the flying control type magnetic head slider and the preamplifier IC according to the present embodiment. In this figure, the same reference numerals as those in FIG. 12 denote the same or corresponding parts as those in FIG. 12, and description thereof will be omitted here. Compared with FIG. 12, this figure newly includes a GND connection line 30 b for connecting the heater GND line 30 a and a flexure that is a component of the suspension 2.

  Next, the structure of the suspension 2 according to the present embodiment will be described.

  FIG. 4 is a structural diagram showing an example of the structure of the suspension according to the present embodiment. This figure shows the overall structure of the suspension 2. In this figure, the magnetic head slider 3 is fixed to the suspension 2 with an adhesive. FIG. 5 shows the shape of the flexure 20 that is a component of the suspension 2. A base plate 21, a hinge plate 22, and a load beam 23 are connected to the flexure 20 by laser spot welding. On the flexure 20, an insulator 24, read signal lines 40a and 41a, write signal lines 50a and 51a, a heater signal line 31a, a heater GND line 30a, and a cover lay 25 are formed. The material of the flexure 20, the base plate 21, the hinge plate 22, and the load beam 23 is stainless steel. The signal line is made of copper, the insulator 24 is made of polyimide, and the coverlay 25 is made of polyimide or epoxy. When the suspension 2 is assembled to the actuator block 1, the base plate 21 is caulked and fixed to the actuator block 1. The flexure 20 is bent 90 ° along the broken line 2b in order to connect the signal line of the preamplifier IC 5 formed on the FPC 4 and the signal line formed on the flexure 20 by soldering or the like.

  The suspension 2 according to the present embodiment is a Long Tail suspension, and the tail portion (the portion of the flexure 20 on the left side from the hinge plate 22 in FIG. 4) is long. Further, a nickel plating 26 serving as a GND connection line 30b is disposed in the vicinity of the hinge plate 22.

  Next, the wiring of the tail part according to the present embodiment will be described.

  Here, the wiring in the conventional tail part is compared with the wiring in the tail part according to the present embodiment. FIG. 6 is a cross-sectional view showing an example of a wiring structure in a conventional tail portion. In this figure, the same reference numerals as those in FIG. 4 denote the same or corresponding parts as those in FIG. 4, and a description thereof will be omitted here. An insulator 24 is formed on the flexure 20, and patterns of the heater GND line 30a, the heater signal line 31a, the read signal lines 40a and 41a, and the write signal lines 50a and 51a are formed on the insulator 24. A coverlay 25 is formed on the pattern. This figure shows a cross section of a conventional tail portion. In such a conventional arrangement, since the heater signal line 31a and the write signal line 51a are close to each other, the crosstalk of the write signal line 51a propagates through the heater signal line 31a and damages the MR element 61 during writing. There is a risk of giving.

  FIG. 7 is a cross-sectional view showing an example of a wiring structure in the tail portion according to the present embodiment. In this figure, the same reference numerals as those in FIG. 6 denote the same or corresponding parts as those in FIG. 6, and the description thereof is omitted here. This figure shows a cross section 2a which is a cross section of the tail portion in FIG. In the wiring of FIG. 7, the interval between the heater signal line 31a and the write signal line 51a and the interval between the heater GND line 30a and the read signal line 40a are longer than the interval between the heater GND line 30a and the heater signal line 31a. Has been placed. In addition, by connecting the heater GND line 30a and the flexure 20 with the GND connection line 30b (nickel plating 26), the actuator block 1 can be used in place of the heater GND line 30a, and the GND connection line 30b (nickel plating 26). ) To the preamplifier IC5, the heater GND line 30a may not be provided. Further, when the heater GND line 30a from the GND connection line 30b (nickel plating 26) to the preamplifier IC5 is not provided as described above, the heater ground may be deleted from the preamplifier IC5.

  As described above, the distance between the heater wiring and the lead wiring (read signal lines 40a and 41a) and the distance between the heater wiring and the write wiring (write signal lines 50a and 51a) are the heater wiring (heater GND line 30a and heater signal line 31a). ), The crosstalk from the write signal to the read signal during writing can be reduced.

  Next, the GND connection line 30b will be described.

  FIG. 8 is a structural diagram showing an example of the structure in the vicinity of the GND connection line 30b according to the present embodiment. This figure is an enlarged view of the position of the GND connection line 30b (nickel plating 26) in FIG. FIG. 9 is a cross-sectional view showing an example of the structure in the vicinity of the GND connection line 30b according to the present embodiment. This figure shows a cross section in the vicinity of the GND connection line 30b (nickel plating 26) in FIG. The insulator 24 has a hole having a diameter of 200 μm or less at the position of the GND connection line 30b in FIG. 8, and the nickel plating 26 connects the heater GND line 30a and the flexure 20 (conductor in the suspension 2) through this hole. is doing. In this case, the connection between the heater GND line 30a and the flexure 20 has a low resistance of 1Ω or less, and the connectivity between the heater GND line 30a and the flexure 20 becomes very good.

  In this embodiment, the heater GND line 30a is disposed on the lead wiring (read signal lines 40a and 41a) side, and the heater signal line 31a is disposed on the write wiring (write signal lines 50a and 51a) side. The GND line 30a may be arranged on the write wiring side. Further, a plurality of GND connection lines 30b may be provided, and the heater GND line 30a and the flexure 20 may be connected at a plurality of locations. In addition to the GND connection line 30b, a method of connecting the slider substrate 3a and the suspension 2 with a conductive adhesive may be used in combination.

  By providing the GND connection line 30b, the disturbance noise can be released to the ground by connecting the slider substrate and suspension of the flying control type magnetic head slider with a low resistance of 1Ω or less and reducing the disturbance noise at the time of reading. it can.

  The position of the GND connection line 30b will be described.

  The closer the position of the GND connection line 30b (nickel plating 26) is to the magnetic head slider 3, the higher the noise reduction effect. However, the position of the GND connection line 30b (nickel plating 26) in the present embodiment is limited as follows. Determined by.

  Here, a description will be given of restrictions caused by caulking the suspension 2 to the actuator block 1 when the magnetic disk device is manufactured. FIG. 10 is a structural diagram showing an example of a structure when the suspension 2 according to the present embodiment is caulked to the actuator block 1. In this figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts as those in FIG. 1, and the description thereof is omitted here. When caulking the suspension 2 to the actuator block 1, a jig 7 is inserted between the suspensions 2 to fix the suspensions 2.

  FIG. 11 is a structural diagram showing an example of the structure in the vicinity of the magnetic head slider 3 when the suspension 2 according to the present embodiment is caulked to the actuator block 1. In this figure, the same reference numerals as those in FIGS. 4 to 6 denote the same or corresponding parts as those shown in FIGS. 4 to 6, and the description thereof is omitted here. Each signal line connection pad of the magnetic head slider 3 and each signal line of the suspension 2 are connected by solder balls 8. The solder ball 8 may be a gold ball.

  The magnetic disk device according to the present embodiment employs a load / unload mechanism, and therefore has a load beam 23a for holding the suspension 2 on the rail during unloading.

  In order to cope with an increase in inertia of the actuator and a low flying height due to the addition of the load beam 23a, the size of the magnetic head slider 3 is smaller than the conventional one (changed from the conventional picometer order to the femtometer order). For this reason, the width and interval of each signal line connection pad of the magnetic head slider 3 are narrow, and it is difficult to draw the heater GND line 30a in the direction of the load beam 23a near the magnetic head slider 3 and connect it to the flexure 20. is there. Further, if the GND connection line 30b (nickel plating 26) is disposed at the position where the jig 7 is inserted, the jig 7 may damage the GND connection line 30b (nickel plating 26). Are arranged avoiding the jig 7. Therefore, the jig 7 and other parts are avoided, and the space where the mechanical characteristics of the suspension are not adversely affected and as close to the magnetic head slider 3 as possible (from the midpoint of the suspension 2 to the magnetic head slider 3 side). ), GND connection line 30b (nickel plating 26) is disposed.

  The head slider support device corresponds to the suspension 2 in the embodiment. Moreover, a support part respond | corresponds to the flexure 20 in embodiment. The insulating portion corresponds to the insulator 24 in the embodiment. The connection unit corresponds to the GND connection line 30b in the embodiment.

  Further, the head slider support device according to the present embodiment can be easily applied to a storage device, and the performance of the storage device can be further improved. Here, the storage device may include, for example, a magnetic disk device.

(Appendix 1) A head slider support device for holding a head slider having at least a heater element,
A support portion made of a conductor for supporting the head slider;
An insulating part made of an insulator in contact with the support part;
A wiring for supplying power to the heater element, a heater signal line in contact with the insulating portion;
A wiring for connecting between the heater element and a ground potential, a heater GND line in contact with the insulating portion;
A head slider support device comprising: a GND connection portion which is a connection portion for connecting the heater GND line and the support portion.
(Supplementary note 2) In the head slider support device according to supplementary note 1,
A head slider support device, wherein a GND connection end of the heater element is connected to a slider substrate of the head slider.
(Appendix 3) In the head slider support device according to Appendix 1 or Appendix 2,
2. A head slider support device, wherein both terminals of a magnetoresistive effect element provided on the head slider are connected to a slider substrate of the head slider via a high resistance provided on the head slider.
(Appendix 4) In the head slider support device according to any one of Appendix 1 to Appendix 3,
The head slider support device, wherein the insulating portion has a hole through which the GND connection portion is passed.
(Appendix 5) In the head slider support device according to any one of Appendix 1 to Appendix 4,
The head slider support device, wherein the GND connection portion is disposed at a position where it does not contact the jig and other components.
(Appendix 6) In the head slider support device according to any one of Appendix 1 to Appendix 5,
Furthermore, at least one write signal line which is a wiring for supplying power to the write element provided in the head slider;
At least one read signal line which is a wiring for supplying electric power to a read element provided in the head slider;
A holding unit for holding the heater signal line, the write signal line, and the read signal line;
With
At least one of the distance between the heater signal line and the write signal line and the distance between the heater signal line and the read signal line is between the heater signal lines in a predetermined region of the holding unit. A head slider support device characterized by being longer than the distance.
(Supplementary note 7) In the head slider support device according to supplementary note 6,
2. The head slider support device according to claim 1, wherein the predetermined region is a tail portion of a long tail suspension.
(Appendix 8) In the head slider support device according to appendix 6 or appendix 7,
The head slider support device, wherein the distance is a distance in a short direction of the head slider support device.
(Supplementary note 9) In the head slider support device according to supplementary note 8,
The head slider support device, wherein the write signal line, the heater signal line, and the read signal line are arranged in this order in the short direction.
(Supplementary Note 10) A head slider support device for holding a head slider provided with at least a heater element,
At least one heater signal line which is a wiring for supplying electric power to the heater element;
At least one write signal line which is a wiring for supplying power to a write element provided in the head slider;
At least one read signal line which is a wiring for supplying electric power to a read element provided in the head slider;
A holding unit for holding the heater signal line, the write signal line, and the read signal line,
At least one of the distance between the heater signal line and the write signal line and the distance between the heater signal line and the read signal line is between the heater signal lines in a predetermined region of the holding unit. A head slider support device characterized by being longer than the distance.
(Supplementary note 11) In the head slider support device according to supplementary note 10,
2. The head slider support device according to claim 1, wherein the predetermined region is a tail portion of a long tail suspension.
(Supplementary Note 12) In the head slider support device according to Supplementary Note 10 or Supplementary Note 11,
The head slider support device, wherein the distance is a distance in a short direction of the head slider support device.
(Supplementary note 13) In the head slider support device according to supplementary note 12,
The head slider support device, wherein the write signal line, the heater signal line, and the read signal line are arranged in this order in the short direction.
(Supplementary note 14) a head control device for controlling the head part;
A support portion made of a conductor that supports a head slider provided with the head portion;
An insulating part made of an insulator in contact with the support part;
A wiring for connecting the head slider and the head control device to control a heater provided in the head slider, a heater signal line in contact with the insulating portion;
A wiring for connecting the heater toward the ground, a heater GND line in contact with the insulating portion;
A storage device comprising: a GND connection portion that is a connection portion that connects the heater GND line and the support portion.
(Supplementary Note 15) In the storage device according to Supplementary Note 14,
The storage device, wherein the insulating portion has a hole through which the GND connection portion passes.
(Supplementary Note 16) In the storage device according to any one of Supplementary Note 14 to Supplementary Note 15,
The storage device according to claim 1, wherein the GND connection portion is disposed at a position not in contact with the jig and other components.
(Supplementary Note 17) In the storage device according to any one of Supplementary Note 14 to Supplementary Note 16,
Furthermore, at least one write signal line which is a wiring for supplying power to the write element provided in the head slider;
At least one read signal line which is a wiring for supplying electric power to a read element provided in the head slider;
A holding unit for holding the heater signal line, the write signal line, and the read signal line;
With
At least one of the distance between the heater signal line and the write signal line and the distance between the heater signal line and the read signal line is between the heater signal lines in a predetermined region of the holding unit. A storage device characterized by being longer than a distance.
(Supplementary note 18) In the storage device according to supplementary note 17,
The storage device according to claim 1, wherein the predetermined area is a tail portion in a long tail suspension.
(Supplementary note 19) In the storage device according to supplementary note 17 or supplementary note 18,
The storage device according to claim 1, wherein the distance is a distance in a short direction of the holding unit.
(Supplementary note 20) In the storage device according to supplementary note 19,
The memory device, wherein the write signal line, the heater signal line, and the read signal line are arranged in this order in the short direction.

It is a structural diagram showing an example of the structure of the actuator according to the present embodiment. It is a structural diagram showing an example of the structure of a magnetic head slider according to the present embodiment. It is a circuit diagram which shows an example of the electrical connection between the magnetic head slider and preamplifier IC which concern on this Embodiment. It is a structural diagram showing an example of the structure of the suspension according to the present embodiment. It is structural drawing which shows an example of the structure of the flexure which concerns on this Embodiment. It is sectional drawing which shows an example of the structure of the wiring in the conventional Tail part. It is sectional drawing which shows an example of the structure of the wiring in the Tail part which concerns on this Embodiment. It is a structural diagram which shows an example of the structure of the GND connection line vicinity which concerns on this Embodiment. It is sectional drawing which shows an example of the structure of the GND connection line vicinity which concerns on this Embodiment. It is a structural diagram showing an example of a structure when caulking the suspension according to the present embodiment to the actuator block. FIG. 5 is a structural diagram showing an example of a structure near a magnetic head slider when the suspension according to the present embodiment is caulked to an actuator block. It is a circuit diagram which shows an example of the electrical connection between the conventional magnetic head slider and preamplifier IC.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Actuator block, 2 Suspension, 3 Magnetic head slider, 3a Slider board, 3b Thin film head part, 4 FPC, 5 Preamplifier IC, 6 pins, 7 Jig, 8 Solder ball, 20 Flexure, 21 Base plate, 22 Hinge plate, 23 23a Load beam, 24 insulator, 25 coverlay, 26 nickel plating, 30 heater GND line connection pad, 30a heater GND line, 30b GND connection line, 31 heater signal line connection pad, 31a heater signal line, 40 and 41 lead signal Line connection pads, 40a and 41a Read signal lines, 50 and 51 write signal line connection pads, 50a and 51a Write signal lines, 61 MR elements, 62 write coils, 63 heater resistors, 64 shunt resistors.

Claims (7)

A head slider support device for holding a head slider having at least a heater element,
A support portion made of a conductor for supporting the head slider;
An insulating part made of an insulator in contact with the support part;
A wiring for supplying power to the heater element, a heater signal line in contact with the insulating portion;
A wiring for connecting between the heater element and a ground potential, a heater GND line in contact with the insulating portion;
A head slider support device comprising: a GND connection portion which is a connection portion for connecting the heater GND line and the support portion. The head slider support device according to claim 1,
A head slider support device, wherein a GND connection end of the heater element is connected to a slider substrate of the head slider. In the head slider support device according to claim 1 or 2,
2. A head slider support device, wherein both terminals of a magnetoresistive effect element provided on the head slider are connected to a slider substrate of the head slider via a high resistance provided on the head slider. In the head slider support device according to any one of claims 1 to 3,
The head slider support device, wherein the insulating portion has a hole through which the GND connection portion is passed. A head slider support device for holding a head slider having at least a heater element,
At least one heater signal line which is a wiring for supplying electric power to the heater element;
At least one write signal line which is a wiring for supplying power to a write element provided in the head slider;
At least one read signal line which is a wiring for supplying electric power to a read element provided in the head slider;
A holding unit for holding the heater signal line, the write signal line, and the read signal line,
At least one of the distance between the heater signal line and the write signal line and the distance between the heater signal line and the read signal line is between the heater signal lines in a predetermined region of the holding unit. A head slider support device characterized by being longer than the distance. In the head slider support device according to claim 3,
2. The head slider support device according to claim 1, wherein the predetermined region is a tail portion of a long tail suspension. A head control device for controlling the head part;
A support portion made of a conductor that supports a head slider provided with the head portion;
An insulating part made of an insulator in contact with the support part;
A wiring for connecting the head slider and the head control device to control a heater provided in the head slider, a heater signal line in contact with the insulating portion;
A wiring for connecting the heater toward the ground, a heater GND line in contact with the insulating portion;
A storage device comprising: a GND connection portion that is a connection portion that connects the heater GND line and the support portion.

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